Delphi ES10261 Oxygen Sensor Sensor Replacement - O2

The Delphi ES10261 is a direct-fit replacement oxygen sensor (O2 sensor) engineered to OE standards by one of the world's leading original equipment manufacturers. Also referred to as a lambda sensor, the O2 sensor monitors exhaust oxygen levels and feeds real-time data to the engine control module (ECM), allowing it to maintain the precise air-fuel mixture needed for optimal combustion, fuel efficiency, and emissions control.

Key Features:

• OE-Grade Engineering: Built by a global OE supplier with over 100 years of automotive experience — the same technology found in new vehicles from the world's top automakers
• Planar Sensor Technology: Advanced planar element with integrated heater reaches operating temperature in as little as six seconds for faster closed-loop activation and reduced cold-start emissions
• Patented Contamination-Resistant Coating: Delphi's proprietary protective coating resists silicone, phosphorous, and other fuel and oil additives that are a leading cause of O2 sensor failure
• High-Temperature Water Seal: Protects the ceramic sensor element from moisture intrusion, vibration damage, and wire corrosion to preserve long-term signal accuracy
• Validated for All Fuel Types: Compatible with gasoline, ethanol blends including E85, and other alcohol-based fuels
• OE-Tested Durability: Validated to 150,000 miles and subjected to over 2,000 hours of severe thermal testing
• Anti-Seize Compound Included: High-temperature anti-seize compound is pre-applied or included to prevent the sensor from seizing in the bung over time
• Direct-Fit Installation: OE-spec connectors and wire lengths allow straightforward installation without cutting or splicing

A failing or contaminated O2 sensor can cause the engine to consume up to 25% more fuel and trigger harmful emissions — making timely replacement with a quality OE-equivalent part essential. The Delphi ES10261 restores factory performance and helps keep the check engine light off.